Sterlco SEU Series Economical Water TCU - Manual (Page 13)

WTR1-600 Chapter 2: Functional Description 13 of 42
Chapter 2: Functional Description
2-1 Introduction
Economical Series water temperature control units are reliable, accurate, and easy-to-use process
temperature control units. They are self-contained, portable, and shipped ready to use.
The Economical Series water temperature control unit is designed to circulate water through your
process and to precisely, automatically, and reliably maintain it at a specified temperature.
Standard unit operating range is from 0ºF (-17ºC) to 250°F (121°C), or up to 300°F (149°C) as an
option. The unit is suited for use with city water, water from portable or central chillers or towers,
or well water.
These units are designed for rapid recirculation of a relatively small amount of water to provide
close and uniform temperature relation between To Process and From Process lines. This
performance, of course, depends on the configuration of your process and any restrictions within
the mold. The recirculation, combined with the large immersion heater and cooling capability,
gives fast and accurate response to bring the water up to temperature or to changes in the settings
when needed.
The Economical Series water temperature control unit is a self-contained system consisting of a
centrifugal pump, electric immersion heater, cool/vent solenoid valve, and electrical control,
including a PID microprocessor controller and thermocouple. It is designed for use in process
temperature control applications using water or a water/glycol mix. Any other use or fluid is
prohibited.
Some standard safety devices include a mechanical overtemperature safety thermostat, a pressure
relief valve, motor overload protection, a low pressure cutout switch, branch fusing, and non-
fused lockable rotary disconnect.
A properly installed, operated, and maintained Economical Series system provides years of
reliable operation. Please read and follow the instructions in this manual to get the most
satisfaction from your Economical Series system.
2-2 Necessary Documents
The following documents are necessary for the operation, installation, and maintenance of
Economical Series water temperature control units. Additional copies are available from the
manufacturer.
Familiarize the appropriate personnel with these documents:
þ This manual.
þ The controller operation manual.
þ The electrical schematic and connection diagram placed inside the control
enclosure.
þ The operation and installation manuals for accessories and options selected
by the customer.
þ The Customer Parts List included in the information packet.